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Re: Monitor goes to sleep on X startup following upgrade in sid

On 2010-01-26 08:43 +0100, Joe Neal wrote:

> I just rebooted my sid box for the first time in about a week to find
> that my monitor goes into sleep mode following X startup.
> Ctl-Alt-F1-F6 wakes it up and lets me log into a console.  Ctl-Alt-F7
> puts it back to sleep.

Looks like bug #564115¹.

> There are some segfaults in the X log related to input drivers, but
> nothing that looks like it would cause this problem.  I can't copy and
> paste easily because I'm on a different computer.
> I've got a motherboard with an integrated i915 video chipset that uses
> the intel X driver.  The driver is being properly loaded by X
> according to the logs.

In version 2:2.9.1-2, xserver-xorg-video-intel uses kernel mode setting
by default.  I assume you are running a 2.6.32 kernel?

> I've tried switching out GDM for KDM to make sure that's not the problem.
> I use apt-listbugs and only upgrade once a week or so.  I skimmed the
> list of RC bugs and didn't see anything like this.  I searched the
> debian forum, looked at several recent mailing list archives  and
> asked on irc.  Anyone here got any ideas?

Try adding a line

options i915 powersave=0

to /etc/modprobe.d/i915-kms.conf.  Does that help?


¹ http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=564115

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